Hopkinson pressure bar experimental apparatus

A Hopkinson pressure bar and experimental device technology, applied in measurement devices, instruments, scientific instruments, etc., can solve problems such as being oxidized, and achieve the effect of improving repeatability and avoiding complexity and uncertainty

Inactive Publication Date: 2014-06-18
HUNAN UNIV
View PDF11 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a Hopkinson compression bar experiment device at high temperature, which can not only solve the heating problem of the specimen in the traditional Hopkinson compression bar experiment at high temperature, but also prevent the specimen from being oxidized at high temperatur

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hopkinson pressure bar experimental apparatus
  • Hopkinson pressure bar experimental apparatus
  • Hopkinson pressure bar experimental apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Attached below Figure 1-5 The present invention will be described in detail.

[0038] figure 1 It is the high-precision Hopkinson compression bar experimental device under high temperature described in the present invention, comprising: electromagnetic trigger switch 1, heating furnace door automatic opening switch 2, electromagnetic drive device 3, drive plate 4, bullet 5, incident rod 6, force Sensor 7, heating furnace 8, heating furnace support device 9, transmission rod 10, buffer device 11 and air compression filter device 12.

[0039] Specifically, the electromagnetic trigger switch 1 and the automatic opening switch 2 of the heating furnace door are connected in series, the automatic opening switch 2 of the heating furnace door can work independently, and the electromagnetic drive cannot be activated if the automatic opening switch of the heating furnace door is not closed; The bullets are connected as one, and the electromagnetically driven flat panel also dr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a Hopkinson pressure bar experimental apparatus. The Hopkinson pressure bar experimental apparatus is characterized by comprising an electromagnetic trigger switch (1), a heating furnace door automatic opening switch (2), an electromagnetic driving device (3), a driving panel (4), a bullet (5), an incident pole (6), a force sensor (7), a heating furnace (8), a heating furnace supporting device (9), a transmitting pole (10), a buffer device (11) and an air compressing and filtering device (12); and the heating furnace is designed for preventing a test piece from being oxidized at a high temperature while heating the test piece and keeping the temperature of the test piece; as high temperature can influence the conduction of stress wave, the digital image correlation (DIC) technology is used for obtaining the change images of the test piece and analyzing the strain, the force sensor is used for analyzing stress, so as to obtain a stress strain curve. The Hopkinson pressure bar is combined with the electromagnetic driving technology and the DIC technology, and therefore the application range of the Hopkinson pressure bar experiment is expanded and a new method for acquiring dynamic parameters of high temperature materials is provided.

Description

technical field [0001] The invention belongs to the research field of high-temperature dynamic mechanical properties of materials, and in particular relates to a high-precision Hopkinson compression bar experiment device and testing method at high temperature, especially based on electromagnetic drive technology and DIC technology. Background technique [0002] The Hopkinson compression bar experiment is widely used in the research of material properties, but most of them are material experiments at room temperature, but high-temperature conditions also exist, so the research on material properties at high temperatures is also required. One of the research methods for the high-temperature dynamic performance of materials is to heat the specimen to the corresponding temperature before the experiment, and then quickly move it to the experimental device, so that the specimen is placed in the air, and the specimen is easily oxidized at high temperature. The temperature of the wo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N3/317
Inventor 孙光永李光耀崔俊佳巫升银唐春红
Owner HUNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap